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A wire of natural length l, young's modu...

A wire of natural length l, young's modulus Y and ares of cross-section A is extended by x. Then, the energy stored in the wire is given by

A

`(1)/(2)(YA)/(l)x^(2)`

B

`(1)/(3)(YA)/(l)x^(2)`

C

`(1)/(2)(Yl)/(A)x^(2)`

D

`(1)/(2)(YA)/(l^(2))x^(2)`

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AAKASH INSTITUTE-MECHANICAL PROPERTIES OF SOLIDS-Assignment(Section-C)
  1. Which of the following relations is true?

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  2. A 5 m long aluminium wire (Y=7xx10^10(N)/(m^2)) of diameter 3 mm suppr...

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  3. Two steel wires of the same radius have their lengths in the ratio of ...

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  4. A steal wire of cross-section area 3xx10^(-6) m^(2) can withstand a m...

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  5. The bulk modulus for an incompresssible liquid is

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  6. A copper rod length L and radius r is suspended from the ceiling by on...

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  7. Which of the folliwing substances has the highest elastictiy

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  8. When a wire of length 10 m is subjected to a force of 100 N along its ...

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  9. Two wire A and B of length l, radius r and length 2l, radius 2r having...

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  10. A cube of side 40 cm has its upper face displaced by 0.1 mm by a tange...

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  11. A rod of length l and radius r is joined to a rod of length l//2 and r...

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  12. The Young's modulus of the meterial of a wire is 2xx10^(10) N m^(-2) I...

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  13. A weight is suspended from a long metal wire. If the wire suddenly bre...

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  14. A wire of natural length l, young's modulus Y and ares of cross-sectio...

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  15. When a force is applied on a wire of uniform cross-sectional area 3xx1...

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  16. If in a wire of Young's moduls Y, longitudinal strain X is produced th...

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  17. A uniform metal rod of 2mm^(2) area of cross section is heated from 0^...

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  18. A material has Poisson's ratio 0.5, If a uniform rod of it suffers a ...

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  19. When the length of a wire is increased by 5%, its radius decreases by ...

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  20. If Young's modulus of elasticity Y for a material is one and half time...

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